Stop-motion for sliver lap-machines.



No. 821,590 PATBNTED MAY 22, 1906.

W. HENRY.

STOP MOTION FOR SLIVER LAP MACHINES.

APPLICATION FILED APR.13,1905.

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STOP MOTION FOR SLIVER LAP MACHINES.

APPLICATION FILED APR.13.1905.

1. IIFFTA TgESEEE W UNITED sTATEsrArENT onrron.

WILLIAM HENRY, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO STODDARD,HASERIOK, RICHARDS & COMPANY, OF BOSTON, MAS- SACHUSETTS, A FIRM.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed April 13, 1905. Serial No. 255,418.

To all whom it may concern:

Be it known that I, WILLIAM HENRY, a citizen of the United States,residing at New Bedford, in the county of Bristol and State ofMassachusetts, have invented a new and useful Improvement in Stop-Motionfor Sliver Lap-Machines, of which the following is a specification.

A stop-motion operated. by the breaking of the sliver before it reachesthe drawing-rolls is now in use.

My improvement comprises a means by which the machine is stopped whenthe sliver has wound up on the top or bottom roll, as often happens if abreak has occurred in the sliver after it has passed through the rolls.In such a case the top roll is lifted more or less by the accumulationof the sliver, and I utilize this lifting of the roll (preferably in themanner below described) as the means whereby the machine is stopped.

My invention will be understood by reference to the drawings, in whichFigure 1 is a sectional view of a sliver lapmachine of well-knownconstruction to which my invention has been applied. Fig. 2 is a sectionon line 2 2 of Fig. 1. Fig. 3 is a sectional detail, and Fig. 4 is asection on line 4 4 of Fig. 1.

In all the views certain of the parts which are unnecessary to theoperation of my improvement are omitted, and in the followingdescription only such parts will be referred to as seem essentialthereto. The frame of the machine is indicated at A. i

B is a can from which a sliver b is drawn through an opening in the backguide-plate C over the spoon-lever D and between the drawing-rolls, fourpairs of which are shown, the last rolls in series being lettered E E.From drawingrolls the sliver is led off to the calendar-rolls and thewooden core .in the usual manner. It will of course be understood thatin this class of machines possibly as many as eighteen slivers may passthrough the machine at one time, the machine being provided with as manyspoon-levers as there are slivers.

The spoon-levers serve as part of a sto motion in case the sliver breaksbetween t e can and the drawing-rolls. The other member comprises thespoon-shaft (1, having wings d, which engage with the toe of anyspoonlever which is not drawn out of the way by the draft of the sliver,as will be understood by those skilled in the art. The spoon-shaft has aclutch at one end comprising a serrated hub d fast on the shaft andengaging with a corresponding serrated hub on the gear d".

This gear is rotated by suitable connectionswith the power-shaft andmoves laterally on the spoon-shaft and is held in contact with the hub(l by a spring. (Not shown.) A rock-shaft d hung in brackets on theframe A, carries two arms of and (Z one of which, (1, has a pin 01,which causes the belt-shipper to be thrown in the following manner: Thebelt-shipper F is mounted on the rod f, which is connected by crossbarsfwith the rod f Both of these rods move in bearings on the frame A. Therod f 2 carries a collar f and a spring f, located between this collarf" and the bearing f tends to'throw the rods f and f toward the loosepulley F causing the shipper F to move the belt from the drivingpulley Fto the loose pulley F This action is prevented, however, by theengagement of a shoulder f on the latch f carried by the arm f on therod f with a coacting edge f 9 on the frame. (See Fig. 2.) The free endof the latch f 7 normally rests on the pin d projecting from the arm dI/Vhen, therefore, the gear d is slid along the'shaft d by the stoppingof its rotation, it operates the rook shaft (Z and arms d 61 thusdisengaging the shoulder f of the latch f 7 from its coacting edge andallowing the spring f to throw the belt by means of the shipper from thefast to the loose pulley.

My invention, as hereinafter described, acts by a similar engagementwith and stoppage of the spoon-shaft, as that is the simplest way I nowknow of utilizing it. As so embodied it consists of a pawl-lever G, solocated and hung in a bracket 9 on the frame A as to be within reach ofthe Wings (1 on the spoon-shaft, so that at the proper time it maypositively engage one of the wings and stop the rotation of spoonshaft,and hence throw the shipper in the way above described. For this purposea rod h is connected at one end with the pawl-lever G, its other endsliding in an opening in a slotted lug j, adjustably attached throughits slot to the bracket g A collar 9 limits the sliding movement of therod 72. The rod it rests upon a cross-bar g, which rests in the lowerhooks of the stirrups e, hung upon the upper roll E. These hooks alsosupport the usual weights E It will be seen that should the roll E belifted because of the winding of the sliver (see Fig. 4) it will liftone or both of its stirrups e, and hence lift the rod h and throw thepawl-leverG into the position shown in Fig. 3, when it will be engagedby one of the wings cl of the spoon-shaft and will stop its revolutionand cause the sh pping of the belt and stopping of the machine.

It wlllbe noted that the pawl is so arranged that it and the rod h,which operates it, serve as a toggle, so that the lifting of thestirrups will move the pawl into position at right angles to the face.of the wing on the spoonshaft. As a result it is practically impossiblefor the pawl to be forced off from the spoon-shaft, no matter how muchpower is used to rotate the spoon-shaft, the end of the pawl being alsopreferably shaped to make this engagement more sure. In this respect myinvention differs practically from any structure in which a hook iscaused to hook over a wing of the spoon-shaft, for in this latter casethe wear of the parts would shortly render the hook ineffective to actas a stop, whereas in my construction wear will have but little effect.

As the sliver is not apt to wind upon any other than one of the lastrolls, I have only shown the application of my invention thereto but itmay be duplicated for the other rolls, if thought best. Moreover, I donot mean to limit my invention to the means shown, for so far as I amaware the top roll of a sliver lap-machine has never been connected witha stop-motion before my invention, and other means for connecting thetop roll with the shipper for the purpose described will doubtless occurto those skilled in the art as the result of my disclosure. Nor is myinvention limited to a sliver lap-machine alone, for it may be embodiedin other textile machines having a free top roll.

What I claim as my invention is 1. In a machine of the kind described, a

drawing-frame comprising top and bottom rolls, a spoon-shaft, a pawlpivotally mounted on the frame of the machine and movable into the pathof one of the wings of said shaft and when so moved lying in a line atright angles to the face of said wing, whereby such wing may abutagainst the end of saidpawl and means operated by the lifting of a toproll to move said pawl as described.

2. In a maclrine of the kind described, a drawing-frame comprising topand bottom rolls, a spoon-shaft, a-pawl pivotally mounted on the frameof the machine and adapted to engage with one of the wings of sa dspoonshaft, and means operated by the lifting of a top roll, wherebysaid pawl will be brought into engagement with such wing and in a lineat right angles to the'face thereof.

3. In a machine of the k nd described, a drawfng-frame comprising topand bottom rolls, a spoon-shaft, a pawl mounted on the machneframe, apair of stirrups connected with one of said top rolls, a cross-barconnected by said stirrups, and means engaging said cross-bar andconnected with said pawllever to form therewith a toggle, whereby thelifting of the stirrups will cause said pawl to move into the path ofone of the wings of said spoon-shaft and into position at right anglesto the face of said wing and abut with its end against such wing, as andfor the purposes described.

4:. In a machine of the kind described, a drawing-frame comprising topand bottom rolls, a spoon-shaft, a pawl mounted on the frame of themachine and adapted to be thrown into engagement with said spoonshaft,the end of said pawl being shaped as shown in order that pressure of awing on said spoon-shaft against said pawl wf ll tend to prevent thedisengagement of said pawl and spoon-shaft, and means operated by thel-fting of a top roll, whereby the engagement of the pawl andspoon-shaft Will be primarily caused.

WVILLIAM HENRY. In presence of JosEPH I. DE TERRA, BRADDOOK B. HATHAWAY.

